/**
 * 
 * @desc 唯一ID生成器
 * @return {UUID} 
 */
function generateUUID() {
    let d = new Date().getTime();
    let uuid = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
        let r = (d + Math.random() * 16) % 16 | 0;
        d = Math.floor(d / 16);
        return (c === "x" ? r : (r & 0x3 | 0x8)).toString(16);
    });
    return uuid;
}

module.exports = generateUUID;